Search vessels picked up signal which may come from missing submarine
The search vessels on Nov 20 have picked up what may be a distress signal from the missing submarine ARA "San Juan". The two ships identified a sonar signature that could be the sound of tools banging on the submarine's hull. While it was "intermittent and weak," the signature allowed the Argentine Navy to narrow the search area to a 35-square mile region located about 300 nm off the coast of Patagonia. As many as 20 vessels from the UK, Chile and Argentina were braving 20-foot waves to look for the missing submarine which had only had about seven days' worth of oxygen on board, and even if it were still functional and traveling below the surface, it would not be able to come up for air because the sea state was too rough. The last radio contact with the "San Juan" pointed to a "failure" or "short circuit" in the vessel's battery system. At the time of contact, the problem was not considered an emergency, and all crewmembers were reported safe. Shoreside commanders instructed the "San Juan" to head for its home base at Mar del Plata for repairs; however, the vessel lost contact the same day and has not been heard from since. A series of seven satellite communication attempts that the Argentine Navy reported on Nov 18 turned out to be a false alarm. Officials now believed that the calls originated from a ship that was broadcasting on the frequency normally used by the "San Juan".
The U.S. Navy has dispatched two complete sets of submarine rescue equipment to the scene in case the vessel is found. Its San Diego-based Undersea Rescue Command dispatched two independent rescue systems that are suitable for the variable ocean depths found near South America's southeastern coast. Four cargo planes full of gear for the first system arrived in Argentina on Nov 19. The first system, the Submarine Rescue Chamber, is a McCann rescue chamber designed during World War II and still used today. It can rescue up to six persons at a time and reach a bottomed submarine at depths of 850 feet.
The second rescue system, the Pressurized Rescue Module, will be transported by additional flights and is scheduled to arrive in Argentina early next week. It can submerge up to 2,000 feet for docking and mating, with a submarine settled on the ocean floor up to 45-degree angle in both pitch and roll. It can rescue up to 16 personnel at a time.
Both systems are operated by two crewmembers and mate with the submarine by sealing over the submarine's hatch, allowing sailors to safely transfer to the rescue chamber.
On Nov 17, 2017, at 11.48 p.m. the "Carina" allided with the middle wall of the New Northern lock in Brunsbüttel. When stopping inside the lock the stern veered to port side, and the turning effect was supported by stron winds. The ship hit the middle wall with its starboard bow and the opposite wall with the starboard stern. Both lock and wall suffered slight damage. In the early morning of Nov 18 the ship resumed the voyage from Moerdijk, where it had sailed on Nov 16, to Lulea, ETA Nov 22.